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Metallurgist
Published in: Metallurgist 11-12/2022

10-05-2022

Impact Strength of Low-Carbon Steel 09G2S Welded Joint Metal

Authors: S. A. Nikulin, S. O. Rogachev, V. A. Belov, A. A. Komissarov, V. Yu. Turilina, N. V. Shplis, Yu. A. Nikolaev

Published in: Metallurgist | Issue 11-12/2022

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Abstract

Comparative results are provided for Charpy V-notch impact bending tests of base metal and 09G2S steel welded joint metal before and after prolonged heat treatment (1200°C, 3.7 h exposure) with plotting of ductile–brittle transition curves and analysis of fracture surfaces after testing. Welded joints of 09G2S steel sheets with each other are prepared by automatic argon-arc welding with a consumable electrode in accordance with PNAE G-7-009-89. It is shown that in the temperature range from 200°С to room temperature impact strength of weld metal in the as-supplied condition is 2–2.5 times lower, and the beginning of ductile–brittle transition temperature is 90°С higher than for base metal. Long-term heat treatment expands the range of base metal ductile–brittle transition temperatures by 30°C and shifts the range of ductile–brittle transition temperatures in weld metal by at least 20°C towards higher temperatures.
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Metadata
Title
Impact Strength of Low-Carbon Steel 09G2S Welded Joint Metal
Authors
S. A. Nikulin
S. O. Rogachev
V. A. Belov
A. A. Komissarov
V. Yu. Turilina
N. V. Shplis
Yu. A. Nikolaev
Publication date
10-05-2022
Publisher
Springer US
Published in
Metallurgist / Issue 11-12/2022
Print ISSN: 0026-0894
Electronic ISSN: 1573-8892
DOI
https://doi.org/10.1007/s11015-022-01286-2

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